I dont know if the 2ZZ-GE is the most powerful engine in the current Toyota lineup!
The CAMRYs V6 is certainly more powerful. Also the V8's in the Landcruisers definately are more powerful.
Haan ... the 2ZZ-GE is a perfomance engine, and in the Corolla RunX ... and it does a 0-60 in 6.8 secs. Fast na!